A Comparison of Antioxidant Properties in Organic and Conventional Blueberries

Gupta-Elera, Gaytri; Garrett, Andrew; Martinez, Andres; Kraus, Ryan D.; Robison, Richard A.; O’Neill, Kim L.

doi:10.5539/jfr.v1n3p1

Cited by 11 publications

(6 citation statements)

References 20 publications

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“…Lowest levels of antioxidants were observed in the presence or absence of mineral fertilizers. These results are in agreement with several authors those who reported that mineral nutrition has little or no effect on the production of polyphenols and antioxidants in some plants (Pavla & Pokluda, 2008;Gupta-Elera et al, 2012;Marilou et al, 2012). Premuzic et al (2001) found in cherry tomato that vitamin C (a powerful antioxidant) content was higher under organic fertilization or fertilization combining mineral and organic inputs than under exclusive mineral fertilization.…”

Section: Resultssupporting

confidence: 93%

Influence of organic and mineral fertilizers on the antioxidants and total phenolic compounds level in tomato (Solanum lycopersicum) var. mongal F1

Sereme¹,

Dabiré²,

Koala³

et al. 2016

JEBAS

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The availability of secondary metabolites in various plant parts can be influenced qualitatively and quantitatively by managing ecological factors or farming practices. Purpose of this study was to determine the impact of organic and mineral fertilization on the content of phenolic compounds and antioxidant activity in fruit of the tomato Mongal F1 variety. Experimentation was carried out in a randomized block factorial design. Results of study revealed that plant treated by organic fertilizers have 16.36± 0.07mg Trolox Equivalent (TE)/100g fresh tomato (ft) antioxidant activity and 6.96± 0.63mg Gallic Acid Equivalent (GAE)/100g ft total phenols content while the plant treated by mineral fertilizer have 15.57± 0.05 mg TE/100g ft for antioxidant activity and 6.09± 0.13mg GAE/100g ft for total phenols content. Furthermore, it was reported that, as compared to mineral fertilization, organic fertilization significantly increases the antioxidant activity and phenolic compounds production in Mongal F1 tomato variety. This increase is probably due to the availability of various major and minor elements in organic fertilizer contrary to mineral fertilizer which has only three major elements, nitrogen, phosphorus, and potassium. 79 days after transplanting, fruit ripping has no obvious effect on the accumulation of these compounds.

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Section: Resultssupporting

confidence: 93%

Influence of organic and mineral fertilizers on the antioxidants and total phenolic compounds level in tomato (Solanum lycopersicum) var. mongal F1

Sereme¹,

Dabiré²,

Koala³

et al. 2016

JEBAS

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“…So far, many scientific studies have been carried out comparing integrated/conventional and organic strawberry [17,18,19] and blueberry production [20,21,22,23]. In this way You et al [24] showed that organically grown berries have significantly higher levels of bioactive compounds compared to berries from integrated production.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Sugar Profile between Leaves and Fruits of Blueberry and Strawberry Cultivars Grown in Organic and Integrated Production System

Akšić

Tosti

Sredojević

et al. 2019

Plants

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The objective of this study was to determine and compare the sugar profile, distribution in fruits and leaves and sink-source relationship in three strawberry (‘Favette’, ‘Alba’ and ‘Clery’) and three blueberry cultivars (‘Bluecrop’, ‘Duke’ and ‘Nui’) grown in organic (OP) and integrated production systems (IP). Sugar analysis was done using high-performance anion-exchange chromatography (HPAEC) with pulsed amperometric detection (PAD). The results showed that monosaccharide glucose and fructose and disaccharide sucrose were the most important sugars in strawberry, while monosaccharide glucose, fructose, and galactose were the most important in blueberry. Source-sink relationship was different in strawberry compared to blueberry, having a much higher quantity of sugars in its fruits in relation to leaves. According to principal component analysis (PCA), galactose, arabinose, and melibiose were the most important sugars in separating the fruits of strawberries from blueberries, while panose, ribose, stachyose, galactose, maltose, rhamnose, and raffinose were the most important sugar component in leaves recognition. Galactitol, melibiose, and gentiobiose were the key sugars that split out strawberry fruits and leaves, while galactose, maltotriose, raffinose, fructose, and glucose divided blueberry fruits and leaves in two groups. PCA was difficult to distinguish between OP and IP, because the stress-specific responses of the studied plants were highly variable due to the different sensitivity levels and defense strategies of each cultivar, which directly affected the sugar distribution. Due to its high content of sugars, especially fructose, the strawberry cultivar ‘Clery’ and the blueberry cultivars ‘Bluecrop’ and ‘Nui’ could be singled out in this study as being the most suitable cultivars for OP.

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“…The implementation of organic fertilizers in Org and Org-Min treatments had a stimulating impact on TPC in the fruit (139.8 and 139.3 mg eq GA 100 g -1 FW, respectively). Numerous studies also confirm the fact that blueberries grown under the organic cultivation system have more polyphenols as well as other antioxidant compounds than blueberries grown under the conventional system (Wang et al, 2008;You et al, 2011;Gupta-Elera et al, 2012). Higher values of TPC were also found in strawberries treated with biofertilizers (Pešaković and Milivojević, 2014) which can be explained by highly intensive mineralizing processes in the substrate and the increased physiological functions and activity of the plant root.…”

Section: Resultsmentioning

confidence: 82%

Variation in health promoting compounds of blueberry fruit associated with different nutrient management practices in a soilless growing system

et al. 2020

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The objective of this study was to determine and compare the content of total anthocyanins (TACY), total phenolics (TPC) and total antioxidant activity (TAA) of the fruit of ?Bluecrop? highbush blueberry grown under different nutrient management practices in a soilless production system. A field study was carried out in a highbush blueberry plantation situated near Belgrade (Serbia), during the period of 2016-2017. The orchard was planted in the spring of 2016 in 50 l polypropylene pots with 5-year-old nursery plants. Each pot was filled with the mix of pine sawdust (60%), white peat (30%) and perlite (10%), and placed at a distance of 0.8 m within the row and 3.0 m between the rows (4,170 bushes ha?1). The following fertilizer treatments were evaluated: 1. organic fertilizers (Org); 2. mineral fertilizers (Min) and 3. a combination of organic and mineral fertilizers (Org-Min). Soluble NPK fertilizers were applied with irrigation water, whereas granulated mineral and pelleted organic fertilizers were mixed with the substrate. Fruit samples were collected in triplicate at the beginning of ripening, full maturity and the end of the harvest season. No significant effect of harvest time on each of the tested parameters was observed, whereas the content of TACY did not even differ under various fertilizer treatments. TPC in the fruit significantly increased in Org and Org-Min treatments (139.8 and 139.3 mg eq GA 100 g-1 FW, respectively) compared to Min treatment (122.7 mg eq GA 100 g-1 FW), while a considerably high TAA level was found only in berries under Org-Min treatment (0.53 mg asc g-1 FW). [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 451-03-68/2020-14/200116 and Grant no. 451-03-68/2020-14/200053]

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A Comparison of Antioxidant Properties in Organic and Conventional Blueberries

Cited by 11 publications

References 20 publications

Influence of organic and mineral fertilizers on the antioxidants and total phenolic compounds level in tomato (Solanum lycopersicum) var. mongal F1

Influence of organic and mineral fertilizers on the antioxidants and total phenolic compounds level in tomato (Solanum lycopersicum) var. mongal F1

Comparison of Sugar Profile between Leaves and Fruits of Blueberry and Strawberry Cultivars Grown in Organic and Integrated Production System

Variation in health promoting compounds of blueberry fruit associated with different nutrient management practices in a soilless growing system

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